diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Kconfig | 1 | ||||
| -rw-r--r-- | src/console/Kconfig | 8 | ||||
| -rw-r--r-- | src/console/console.c | 3 | ||||
| -rw-r--r-- | src/drivers/spi/Kconfig | 4 | ||||
| -rw-r--r-- | src/drivers/spi/Makefile.inc | 5 | ||||
| -rw-r--r-- | src/drivers/spi/spiconsole.c | 71 | ||||
| -rw-r--r-- | src/include/console/spi.h | 72 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/Kconfig | 1 | ||||
| -rw-r--r-- | src/soc/intel/braswell/Kconfig | 1 | ||||
| -rw-r--r-- | src/soc/intel/broadwell/Kconfig | 1 | ||||
| -rw-r--r-- | src/soc/intel/fsp_baytrail/Kconfig | 1 | ||||
| -rw-r--r-- | src/southbridge/intel/lynxpoint/Kconfig | 1 |
12 files changed, 169 insertions, 0 deletions
diff --git a/src/Kconfig b/src/Kconfig index 902855ec8d..bab05f286a 100644 --- a/src/Kconfig +++ b/src/Kconfig @@ -777,6 +777,7 @@ config DEBUG_SMI bool "Output verbose SMI debug messages" default n depends on HAVE_SMI_HANDLER + select SPI_FLASH_SMM if SPI_CONSOLE help This option enables additional SMI related debug messages. diff --git a/src/console/Kconfig b/src/console/Kconfig index 7d6fa0e36f..a2f893a6fc 100644 --- a/src/console/Kconfig +++ b/src/console/Kconfig @@ -211,6 +211,14 @@ config CONSOLE_QEMU_DEBUGCON_PORT depends on CONSOLE_QEMU_DEBUGCON default 0x402 +config SPI_CONSOLE + bool "SPI debug console output" + depends on HAVE_SPI_CONSOLE_SUPPORT && !DEBUG_SPI_FLASH + help + Enable support for the debug console on the Dediprog EM100Pro. + This is currently working only in ramstage due to how the spi + drivers are written. + choice prompt "Default console log level" default DEFAULT_CONSOLE_LOGLEVEL_8 diff --git a/src/console/console.c b/src/console/console.c index 00c0f1ce2e..855de648cd 100644 --- a/src/console/console.c +++ b/src/console/console.c @@ -24,6 +24,7 @@ #include <console/streams.h> #include <console/uart.h> #include <console/usb.h> +#include <console/spi.h> #include <rules.h> void console_hw_init(void) @@ -35,6 +36,7 @@ void console_hw_init(void) __uart_init(); __ne2k_init(); __usbdebug_init(); + __spiconsole_init(); } void console_tx_byte(unsigned char byte) @@ -54,6 +56,7 @@ void console_tx_byte(unsigned char byte) __uart_tx_byte(byte); __ne2k_tx_byte(byte); __usb_tx_byte(byte); + __spiconsole_tx_byte(byte); } void console_tx_flush(void) diff --git a/src/drivers/spi/Kconfig b/src/drivers/spi/Kconfig index 4052bb4713..dedb88f664 100644 --- a/src/drivers/spi/Kconfig +++ b/src/drivers/spi/Kconfig @@ -137,3 +137,7 @@ config SPI_FLASH_FAST_READ_DUAL_OUTPUT_3B to the chip on MOSI and data is received on both MOSI and MISO. endif # SPI_FLASH + +config HAVE_SPI_CONSOLE_SUPPORT + def_bool n + diff --git a/src/drivers/spi/Makefile.inc b/src/drivers/spi/Makefile.inc index ade34a2988..6697c702fb 100644 --- a/src/drivers/spi/Makefile.inc +++ b/src/drivers/spi/Makefile.inc @@ -1,5 +1,10 @@ # SPI flash driver interface +ifeq ($(CONFIG_SPI_CONSOLE),y) +ramstage-y += spiconsole.c +smm-$(CONFIG_DEBUG_SMI) += spiconsole.c +endif + ifeq ($(CONFIG_COMMON_CBFS_SPI_WRAPPER),y) bootblock-y += spi_flash.c bootblock-$(CONFIG_SPI_FLASH_EON) += eon.c diff --git a/src/drivers/spi/spiconsole.c b/src/drivers/spi/spiconsole.c new file mode 100644 index 0000000000..39a574c3ca --- /dev/null +++ b/src/drivers/spi/spiconsole.c @@ -0,0 +1,71 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2015 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#include <spi-generic.h> +#include <spi_flash.h> +#include <console/spi.h> + +void spiconsole_init(void) { + spi_init(); + return; +} + +/* + * The EM100 'hyper terminal' specification defines a header of 9 characters. + * Because of this, devices with a spi_crop_chunk of less than 10 characters + * can't be supported by this standard. + * + * To add support in romstage, the static struct here and the ones used by + * spi_xfer will need to be modified - removed, or mapped into cbmem. + * + * Because the Dediprog software expects strings, not single characters, and + * because of the header overhead, this builds up a buffer to send. + */ +void spiconsole_tx_byte(unsigned char c) { + static struct em100_msg msg = { + .header.spi_command = EM100_DEDICATED_CMD, + .header.em100_command = EM100_UFIFO_CMD, + .header.msg_signature = EM100_MSG_SIGNATURE, + .header.msg_type = EM100_MSG_ASCII, + .header.msg_length = 0 + }; + + /* Verify the spi buffer is big enough to send even a single byte */ + if (spi_crop_chunk(0,MAX_MSG_LENGTH) < + sizeof(struct em100_msg_header) + 1) + return; + + msg.data[msg.header.msg_length] = c; + msg.header.msg_length++; + + /* Send the data on newline or when the max spi length is reached */ + if (c == '\n' || (sizeof(struct em100_msg_header) + + msg.header.msg_length == spi_crop_chunk(0, + MAX_MSG_LENGTH))) { + struct spi_slave spi = {.rw = SPI_READ_FLAG}; + + spi_xfer(&spi, &msg, sizeof(struct em100_msg_header) + + msg.header.msg_length, NULL, 0); + + msg.header.msg_length = 0; + } + + return; +} + diff --git a/src/include/console/spi.h b/src/include/console/spi.h new file mode 100644 index 0000000000..c47fec541a --- /dev/null +++ b/src/include/console/spi.h @@ -0,0 +1,72 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2015 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#ifndef CONSOLE_SPI_H +#define CONSOLE_SPI_H 1 + +#include <rules.h> +#include <stdint.h> + +void spiconsole_init(void); +void spiconsole_tx_byte(unsigned char c); + +#define __CONSOLE_SPI_ENABLE__ CONFIG_SPI_CONSOLE && \ + (ENV_RAMSTAGE || (ENV_SMM && CONFIG_DEBUG_SMI)) + +#if __CONSOLE_SPI_ENABLE__ +static inline void __spiconsole_init(void) { spiconsole_init(); } +static inline void __spiconsole_tx_byte(u8 data) { spiconsole_tx_byte(data); } +#else +static inline void __spiconsole_init(void) {} +static inline void __spiconsole_tx_byte(u8 data) {} +#endif /* __CONSOLE_SPI_ENABLE__ */ + +#define MAX_MSG_LENGTH 128 + +#define EM100_DEDICATED_CMD 0x11 +#define EM100_UFIFO_CMD 0xC0 +#define EM100_MSG_SIGNATURE 0x47364440 + +enum em100_message_types { + EM100_MSG_CHECKPOINT_1B = 0x01, + EM100_MSG_CHECKPOINT_2B, + EM100_MSG_CHECKPOINT_4B, + EM100_MSG_HEX, + EM100_MSG_ASCII, + EM100_MSG_TIMESTAMP, + EM100_MSG_LOOKUP +}; + +struct em100_msg_header { + uint8_t spi_command; + uint8_t reserved; + uint8_t em100_command; + uint32_t msg_signature; + uint8_t msg_type; + uint8_t msg_length; +} __attribute__ ((packed)); + +struct em100_msg { + struct em100_msg_header header; + char data[MAX_MSG_LENGTH]; +} __attribute__ ((packed)); + + + +#endif /* CONSOLE_SPI_H */ diff --git a/src/soc/intel/baytrail/Kconfig b/src/soc/intel/baytrail/Kconfig index 921f568fa9..8de32de8f4 100644 --- a/src/soc/intel/baytrail/Kconfig +++ b/src/soc/intel/baytrail/Kconfig @@ -36,6 +36,7 @@ config CPU_SPECIFIC_OPTIONS select UDELAY_TSC select SOC_INTEL_COMMON select HAVE_INTEL_FIRMWARE + select HAVE_SPI_CONSOLE_SUPPORT config BOOTBLOCK_CPU_INIT string diff --git a/src/soc/intel/braswell/Kconfig b/src/soc/intel/braswell/Kconfig index f76b9b244c..5a41056103 100644 --- a/src/soc/intel/braswell/Kconfig +++ b/src/soc/intel/braswell/Kconfig @@ -49,6 +49,7 @@ config CPU_SPECIFIC_OPTIONS select UDELAY_TSC select USE_GENERIC_FSP_CAR_INC select HAVE_INTEL_FIRMWARE + select HAVE_SPI_CONSOLE_SUPPORT config BOOTBLOCK_CPU_INIT string diff --git a/src/soc/intel/broadwell/Kconfig b/src/soc/intel/broadwell/Kconfig index 6561fe27fa..33644e840b 100644 --- a/src/soc/intel/broadwell/Kconfig +++ b/src/soc/intel/broadwell/Kconfig @@ -43,6 +43,7 @@ config CPU_SPECIFIC_OPTIONS select SOC_INTEL_COMMON select HAVE_INTEL_FIRMWARE select SOC_INTEL_COMMON_ACPI_WAKE_SOURCE + select HAVE_SPI_CONSOLE_SUPPORT config BOOTBLOCK_CPU_INIT string diff --git a/src/soc/intel/fsp_baytrail/Kconfig b/src/soc/intel/fsp_baytrail/Kconfig index 36229de7a2..d9114fc008 100644 --- a/src/soc/intel/fsp_baytrail/Kconfig +++ b/src/soc/intel/fsp_baytrail/Kconfig @@ -48,6 +48,7 @@ config CPU_SPECIFIC_OPTIONS select UDELAY_TSC select SUPPORT_CPU_UCODE_IN_CBFS select HAVE_INTEL_FIRMWARE + select HAVE_SPI_CONSOLE_SUPPORT config SOC_INTEL_FSP_BAYTRAIL_MD bool diff --git a/src/southbridge/intel/lynxpoint/Kconfig b/src/southbridge/intel/lynxpoint/Kconfig index 3c8ae115e5..3221cff278 100644 --- a/src/southbridge/intel/lynxpoint/Kconfig +++ b/src/southbridge/intel/lynxpoint/Kconfig @@ -33,6 +33,7 @@ config SOUTH_BRIDGE_OPTIONS # dummy select PCIEXP_COMMON_CLOCK select SPI_FLASH select HAVE_INTEL_FIRMWARE + select HAVE_SPI_CONSOLE_SUPPORT config INTEL_LYNXPOINT_LP bool |